body {
    margin: 0;
    padding: 0;
    font-size: 15px;
    font-family: "宋体";
    color: white;
}

* {
    margin: 0;
    padding: 0;
    list-style: none;
    border: 0;
    outline: none;
    text-decoration: none;
}

#site {
    width: 100%;
    height: 1000px;
    background-color: black;
}

#layout-one {
    width: 700px;
    color: white;
    margin: 0 auto;
    padding-top: 50px;
}

#layout-two {
    width: 700px;
    height: 100px;
    margin: 0 auto;
    background-color: white;
    color: black;
    margin-top: 15px;
    border-radius: 20px;
}

.layout-two-o {
    width: 700px;
    height: 30px;
    margin-left: 20px;
    padding-top: 10px;
    color: silver;
}

.layout-two-t {
    float: right;
    margin-right: 20px;
}

.button {
    background-color: #FF8C00;
    border: none;
    color: white;
    padding: 10px 30px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 18px;
    border-radius: 15px;
}

#layout-three {
    width: 680px;
    height: 300px;
    margin: 0 auto;
    background-color: white;
    color: black;
    margin-top: 15px;
    border-radius: 20px;
    padding-top: 20px;
    padding-left: 20px;
}

#layout-1 {
    width: 500px;
    height: 50px;
}

#layout-2 {
    padding-top: 30px;
    width: 500px;
    height: 50px;
}

#layout-3 {
    padding-top: 30px;
    width: 500px;
    height: 50px;
}

.layout-three-o {
    float: left;
    width: 50px;
    height: 50px;
}

.layout-three-o .img {
    width: 50px;
    height: 40px;
}

.layout-three-f {
    width: 500px;
    height: 50px;
    padding-top: 3px;
}

.layout-three-f img {
    float: left;
}

.layout-three-f p {
    color: silver;
    padding-top: 3px;
    margin-left: 50px;
}

#layout-four {
    width: 700px;
    height: 20px;
    margin: 0 auto;
    background-color: white;
    color: black;
    margin-top: 15px;
    border-radius: 30px;
    padding-top: 4px;
}

#layout-four .four {
    width: 200px;
    height: 13px;
    background: #FF8C00;
    margin-left: 10px;
    padding-top: 3px;
    border-radius: 30px;
}